KR100616164B1 - Adaptive Image Deinterlacing Device and Method Using Median Filter - Google Patents

Abstract

According to the present invention, it is possible to exclude complex computations for selective application of intra / inter images through median filtering techniques using line average values, median filtering values, and motion compensation values. Unlike the conventional method of calculating the inter-frame difference and the sum total of the forward and reverse interframes and the intra and inter frame difference and the sum total for the deinterlacing, the pixel value and median filter of the deinterlaced image using the line average value Deinterlaced image of inter frame is generated through median filtering which takes the median value of pixel value of deinterlaced image using motion compensation and deinterlaced image using motion compensation as the final pixel value, and inter frame is generated through motion estimation / compensation Movement information that occurs when Based on the motion vector, the size of the motion estimation block, and the size of the motion search area, deinterlacing into an intra or inter image by intersecting lines can be performed, thereby adapting to the motion of the image without requiring complicated computation. It is possible to realize image deinterlacing and to suppress block artifacts that cause deterioration of image quality in a reproduced image.

Description

Adaptive image deinterlacing apparatus and method using median filter {APPARATUS AND METHOD FOR DE-INTERLACING ADAPTIVELY FIELD IMAGE BY USING MEDIAN FILTER}

1 is a block diagram of an adaptive image deinterlacing apparatus using a median filter according to an embodiment of the present invention;

FIG. 2 is a detailed block diagram of a third inter frame generation block shown in FIG. 1;

3 is a view illustrating a process of selecting one of three values obtained through line average, median filter, and motion estimation / compensation by median filtering;

4 is a block diagram of an image deinterlacing apparatus using a conventional motion compensation technique.

<Description of the code | symbol about the principal part of drawing>

102: intra frame generation block 104: first inter frame generation block

106: second inter frame generation block 108: third inter frame generation block

110: median filtering block 112: intra / inter decision block

114: frame generation block 1081: field memory block

1083 motion estimation block

1085: forward interframe generation block

1087 reverse frame generation block

1089 MC inter frame generation block

The present invention relates to a technique for deinterlacing an image signal, and more particularly, an image using a motion count suitable for converting an interlaced image having an odd (even) field and an even (even) field into an intra or interframe deinterlaced image. A deinterlacing device and a method thereof are provided.

In general, an image signal for display may be classified into an interlaced image and a deinterlaced image. The interlaced image may be an image that is displayed through an annular scan consisting of an odd field and an even field, and the deinterlaced image may be sequentially composed of one frame. Indicates an image displayed through.

As is well known, the video signal of NTSC broadcasting is composed of interlaced video (ie, a method of expressing a single video frame through a parallel scan of an odd field and an even field). The display device of the device supports a video mode of a deinterlacing method (ie, a method of sequentially scanning an image line by line to express one frame). Therefore, such a PDP adopts a means for rearranging NTSC broadcast interlaced video into deinterlaced video.

Typical deinterlacing methods include a method of generating a deinterlaced image using two lines of data as it is and a method of generating an interlaced image based on the estimation result of pixel (pixel) motion.

Among the conventional methods, the method of using the line data as it is is a technique of generating a deinterlaced image by inserting the odd field line data and even field line data by overlapping line by line (line cross-insertion method). On the other hand, there is a problem that the quality of the interpolation data is simple, but in the case of a video having a lot of motion in each field, the image difference between the fields is inevitably accompanied by deterioration of image quality near the edge.

In addition, the method of estimating the motion in pixels among the above-described conventional methods estimates motion in pixels, and based on the motion estimation result, adjacent pixels in the current field and / or adjacent positions in the previous field. A technique for generating a deinterlaced image by using pixels, which has a very strong characteristic in the movement of the image, but the hardware configuration and calculation amount is very complicated, and this problem leads to the commercialization of the deinterlaced device. It is acting as a deterrent to lowering prices.

On the other hand, as a way to solve the above problems of the prior art, a new method using a mixture of the interpolation method using the line insertion method and motion estimation / compensation has been proposed, the hardware to realize the new method An exemplary configuration is shown in FIG.

4 is a block diagram of a conventional video deinterlacing apparatus, in which a field data preprocessing block 402, an intra frame generation block 404, a forward inter frame generation block 406, a reverse inter frame generation block 408, and an inter Frame generation block 410, first difference generation block 412, second difference generation block 414, intra / inter decision block 416, and frame selection block 418.

Referring to FIG. 4, the field data preprocessing block 402 includes a plurality of field memories and a motion estimation block, although detailed illustration in the drawings is omitted. Field data (or field and even fields) are provided from outside. ) Is provided to the intra frame generation block 404, and motion vector of each block unit is estimated by estimating the motion in units of N × N blocks using one field data (for example, an odd field) continuous on the time axis. And generate the generated motion vectors along with the selected field data (eg, odd field data) to the forward and reverse inter frame generation blocks 406 and 408, respectively.

The intra frame generation block 404 then deinterlaces the intra frame data, i.e., the intra frame, in such a manner as to insert line data sequentially using the field data (or field and even fields) provided from the field data preprocessing block 402. In generating the image data, the intra frame data (deinterlaced image data) generated here is provided to the second difference generating block 414 and the frame selection block 418 through line L41, respectively.

In addition, the forward inter frame generation block 406 is used for the N × N block between the n th field data (eg, the n th odd field data) provided from the field data preprocessing block 402 and the n−1 th and n th field data. A forward prediction field is generated using the motion vectors obtained through unit motion estimation, and a forward inter frame, that is, a forward deinterlaced image is generated through a line data insertion method using the generated forward prediction field and the n th field. The forward inter frames generated therein are provided to the inter frame generation block 410 and the first difference generation block 412 through the line L42, respectively.

Subsequently, the reverse inter frame generation block 408 is configured to provide an N-th field data (eg, n-1 th odd field data) and n-1 th and n th field data provided from the field data preprocessing block 402. A backward prediction field is generated using the motion vectors obtained through the unit motion estimation of the × N block, and a reverse interframe, i.e., a line data insertion method using the generated backward prediction field and the n-1 th field, that is, A reverse deinterlaced image is generated, and the generated reverse inter frames are provided to the inter frame generation block 410 and the first difference generation block 412 through the line L43, respectively.

In response, the inter frame generation block 410 adds the corresponding respective pixel values of the forward inter frame provided through the line L42 and the reverse inter frame provided through the line L43 and then averages (i.e., 1/1). 2) generate an inter frame (i.e., a motion compensation (MC) inter frame) in which the inter frame is generated to the second difference generation block 414 and the frame selection block 418 via line L44. Each is provided.

Further, the first difference generating block 412 extracts the difference values (error signals) between the forward inter frame provided through the line L42 and the reverse inter frame provided through the line L43, that is, the pixels for all the pixels. The difference values are extracted, and the extracted difference values are added together to calculate an inter frame difference total value and then provided to the next stage intra / inter decision block 416.

Next, the second difference generating block 414 extracts difference values (error signals) between the intra frame provided through the line L41 and the inter frame provided through the line L44, that is, the pixel difference values for all the pixels. The sum of these extracted difference values is added to calculate an intra / inter frame difference total value and then provided to the next stage intra / inter decision block 416.

In response, the intra / inter decision block 416 compares the inter frame difference total value provided from the first difference generation block 412 with the intra / inter frame difference total value provided from the second difference generation block 414. Based on the comparison result, a switching signal for selecting a deinterlaced intra image or a deinterlaced inter image is generated and provided to the frame selection block 418 through the line L45. For example, when the inter frame difference total value is at least greater than the intra / inter frame difference total value, a switching signal is generated to select the deinterlaced image in the inter mode, and vice versa, to select the deinterlaced image in the intra mode. Provided to frame selection block 418 through L45.

As a result, in the frame selection block 418, in response to the switching signal provided through the line L45, the deinterlaced intra image on the line L41 is selected as an output, or the deinterlaced inter image (motion compensation inter image) on the line L44 is selected. Select as output. Here, the output selection of the deinterlaced image is made in one frame unit.

That is, in the conventional deinterlacing apparatus, the inter frame difference value between the forward inter frame and the reverse inter frame is calculated, the intra / inter frame difference value between the intra frame and the inter frame is calculated, and the two difference values calculated as described above are calculated. Based on this, it is determined and determined whether to deinterlace an interlaced image into an intra image or to deinterlace a motion compensation (MC) inter image.

However, in the conventional deinterlace apparatus as described above, in order to determine whether to deinterlace an interlaced image into an intra image or to deinterlace a motion compensated inter image, a difference value and a sum total difference between forward and reverse interframes are determined. Since it is necessary to calculate the difference between the intra and inter frames and the difference total value, there is a problem that a separate complicated calculation is required.

In addition, in the above-described conventional method of mainly taking a motion compensation inter image in a part without a motion and an intra image in a part in a motion, there is a problem in that a correct value is not found when the motion is relatively large. In addition, even if the motion compensation inter image is taken in the non-motion part, block artifacts remain, and these problems provide a cause of deterioration of image quality.

Accordingly, the present invention is to solve the above problems of the prior art, it is possible to exclude the complex computation for the selective application of the intra / inter image through the median filtering technique using the line average value, median filtering value and the motion compensation value An object of the present invention is to provide an apparatus and method for adaptive image deinterlacing using a median filter.

Another object of the present invention is to provide an apparatus and method for adaptive image deinterlacing using a median filter capable of suppressing generation of block artifacts through a median filtering technique using a line average value, median filtering value, and a motion compensation value.

According to an aspect of the present invention, there is provided an apparatus for converting an interlaced image into a deinterlaced image in an image system supporting a deinterlaced image mode, and interleaving a deinterlaced intra image by interposing a line of an odd field and an even field. First means for generating a deinterlaced first inter-image using means for generating, line average values of the odd and even fields, and second inter-image deinterlaced through median filtering using adjacent N pixel values. Third means for generating a prediction field through motion estimation / compensation between successive fields in time, and generating a deinterlaced motion compensation inter-image using the generated prediction field and the corresponding field; Using each output from the first to third means Means for selecting a final inter image by performing median filtering and selecting an output of the intra image or the final inter image as a deinterlaced image based on motion information of each block generated during the motion estimation / compensation; An adaptive image deinterlacing apparatus using a median filter is provided.

According to another aspect of the present invention, there is provided a method for converting an interlaced image into a deinterlaced image in an image system supporting a deinterlaced image mode, and interleaving a deinterlaced intra image by interleaving lines of an odd field and an even field. A first inter image generated by using a first process, a first inter image generated using a line average value, a second inter image generated by median filtering using adjacent multiple pixel values, and a third inter image generated by motion estimation / compensation between fields. A second process of performing a median filtering on the image to determine a final inter image, and a third step of selecting an output of the intra image or the final inter image as a deinterlaced image based on motion information generated during the motion estimation / compensation Adaptive Image Decoding Using Median Filters It provides the interlace method.

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Key technical aspects of the present invention include the above-described conventional methods for calculating the inter-frame difference and the difference total value and the intra and inter-frame difference value and the difference total value in the forward and reverse directions for deinterlacing into an intra or inter image. In contrast, the interframe deinterlace is performed through median filtering which takes the median value of the pixel value of the deinterlaced image using the line average value, the pixel value of the deinterlaced image using the median filter and the pixel value of the deinterlaced image using the motion compensation as the final pixel value. Intra image or inter image by intersecting lines based on motion information (motion vector, size of motion estimation block and size of motion search region) generated when generating an image and generating inter frame through motion estimation / compensation By deinterlacing Through these technical means it can easily attain the bar for the purpose of the present invention.

1 is a block diagram of an adaptive image deinterlacing apparatus using a median filter according to an exemplary embodiment of the present invention, wherein an intra frame generation block 102, a first inter frame generation block 104, and a second inter frame generation block are shown. 106, a third inter frame generation block 108, a median filtering block 110, an intra / inter decision block 112, and a frame generation block 114.

Referring to FIG. 1, the adaptive image deinterlacing apparatus of the present invention generates an intra frame using a line crossing insertion method, generates an inter frame using a line average value, and uses median filtering using peripheral pixel values. The first technical feature is that it has an interframe, and has a data processing path for generating an interframe using a motion estimation / compensation technique, and also has a deinterlaced image using a line average value, a deinterlaced image using a median filter, and The second technical feature is that the median filtering is performed once again on the deinterlaced image using motion compensation to generate the deinterlaced image of the desired interframe, and the motion information (motion vector, the size of the motion estimation block, and the size of the motion search region) are obtained. ) This And it has a third technical feature in that to select the inter-image obtained by the intra-image or a median filter to a final de-interlaced image.

First, the intra frame generation block 102 performs intra frame data, i.e., intra frame in such a manner as to cross-insert an odd line and an even line using field data (or odd field and even field) provided from a field memory block (not shown). To generate the deinterlaced image data, and the generated intra frame data (deinterlaced image data) is transferred to the frame generation block 114 via the line L11.

Next, the first inter frame generation block 104 uses the field data (odd field and even field) provided from the field memory block (not shown) to take the line average value, thereby deinterlacing the image of the inter frame. By generating the data, the inter frame data (deinterlaced image data) generated here is provided to the median filtering block 110 via the line L12.

In addition, the second inter frame generation block 106 applies median filtering on field data (odd field and even field) provided from the field memory block (not shown), that is, a plurality of adjacent pixels in the odd field and even field. As an example, as shown by reference numeral A in FIG. 3, the upper and lower pixels ((X, Y-1), (X, Y + 1)) of the target pixel, and the upper and lower pixels in the diagonal direction ((X−)). 1, Y), (X + 1, Y + 1)), six neighbors with different right and left pixels ((X + 1, Y-1), (X-1, Y + 1)) in different diagonal directions The median filtering pixel is used to generate a deinterlaced pixel and is provided to the median filtering block 110 through the line L13. Here, the pixel value is obtained by taking an average value of six adjacent pixels. Corresponding pixel values of the two lines for deinterlaced images performed for each of the odd and even fields To be gained.

The third inter frame generation block 108 then generates, for example, a motion compensated (MC) inter frame through motion estimation / compensation using a block matching algorithm between temporally adjacent fields (either field or even field). N × N (e.g., 4x4) motion estimation block, (N + M) x (N + M) (e.g., 20x20) motion search region, motion vector for each block obtained through motion estimation, etc. A motion compensated inter frame is generated and transmitted to the median filtering block 110 through the line L14. A detailed process will be described in detail with reference to FIG. 2 showing a detailed block diagram.

FIG. 2 is a detailed block diagram of the third inter frame generation block shown in FIG. 1, which includes a field memory block 1081, a motion estimation block 1083, a forward inter frame generation block 1085, and a reverse inter frame generation block ( 1087 and MC inter frame generation block 1089.

Referring to FIG. 2, the field memory block 1081 stores field data input from the outside for deinterlacing. The field memory block 1081 generates an n-th field (eg, an n-th field) on a line L21 to generate a motion estimation block 1083. And the forward inter frame generation block 1085, and generate an n-1 th field (e.g., an n-1 th odd field that is temporally adjacent to the n th field) on a line L23. And forward inter frame generation block 1087.

Next, the motion estimation block 1081 has one field data (e.g., an odd field) continuous on the time axis, i.e., the n-1th odd field (previous odd field) on the line L23 and the nth odd on the line L21. Movement in the motion search area of (N + M) × (N + M) (eg 20 × 20) in units of N × N blocks (eg 4 × 4 blocks) relative to the field (current odd field) And generate a motion vector of each block unit, and the generated motion vectors are transferred to the forward inter frame generation block 1085 and the reverse inter frame generation block 1087 through the line L25, respectively. The motion information (ie, the motion vector, the size of the motion estimation block, the size of the motion search region) is provided to the intra / inter decision block 112.

Next, the forward inter frame generation block 1085 is provided from the motion estimation block 1083 through line L25 and the n th field data (eg, the n th odd field data) provided from the field memory block 1081 on line L21. A forward prediction field is generated by performing motion compensation using a motion vector, and a forward interframe, that is, a forward deinterlaced image, is generated by a line data cross-insertion method using the generated forward prediction field and the nth field. The forward inter frame generated here is provided to the MC (motion compensation) inter frame generation block 1089 via line L26.

In addition, the reverse inter frame generation block 1087 is similar to the forward inter frame generation block 1085 described above, and the n−1 th field data provided from the field memory block 1081 through the line L23 (eg, n−). Motion compensation using the motion vector provided from the motion estimation block 1083 through the first odd field data) and the line L25 to generate a reverse prediction field, and generate the reverse prediction field and the n-1 th field. A reverse interframe, that is, a reverse deinterlaced image, is generated by a line data cross-insertion scheme using the reverse data, and the generated reverse interframe is provided to the MC interframe generation block 1089 through a line L27.

In response, the MC inter frame generation block 1089 includes a forward inter frame provided from the forward inter frame generation block 1085 through line L26 and a reverse direction provided from the reverse inter frame generation block 1087 through line L27. A motion compensated inter frame (i.e., deinterlaced image of MC inter mode) is generated by adding the corresponding respective pixel values of the inter frame and then taking the average again (i.e. 1/2) The inter frame (inter image) is transmitted to the median filtering block 110 of FIG. 1.

Referring back to FIG. 1, the median filtering block 110 includes a pixel value using a line average value provided through line L12, a median filtered pixel value provided through line L13, and a motion compensated pixel value provided through line L14. Median filtering is performed to generate a final inter frame, i.e., as shown in FIG. 3, the pixel value LA using a line average value, the pixel value X and Y using median filtering, and motion compensation. Median filtering is performed by selecting an intermediate value among the pixel values MC to generate final inter frame pixel values, and the generated pixel values for the inter frame are generated through the line L16. Is provided. Herein, considering that the X and Y values are pixel values obtained by taking an average of 6 adjacent pixels, the probability that the X and Y values are selected as the final pixel value will increase as the motion is relatively large.

Meanwhile, the intra / inter decision block 112 uses the motion information (ie, the motion vector, the size of the motion estimation block, and the size of the motion search region) provided from the third inter frame generation block 108 through L15. A coefficient k for intra or inter mode determination is calculated as shown in the following equation, the calculated coefficient k is compared with a predetermined reference value, and the deinterlaced intra image (image on line L11) or deinterlacing based on the comparison result is obtained. A switching signal for selecting the inter video (image on line L16) is generated and provided to the frame selection block 114 through line L17. For example, when the calculated coefficient k is greater than or equal to the preset reference value, the intra / inter decision block 112 generates a switching signal for selecting an intra image on the line L17, and the calculated coefficient k is greater than the preset reference value. When small, the intra / inter decision block 112 generates a switching signal on line L17 for selecting an inter image. In this case, a large coefficient k means that there is a relatively large amount of motion, whereas a small coefficient means that a relatively small amount of motion does not exist. Therefore, when the coefficient k value is larger than the reference value, an intra image is selected, Select the inter image.

In Equation 1, Vx denotes a motion coordinate value on the x-axis, Vy denotes a motion coordinate value on the y-axis, and SR (size of a motion search area (or motion compensation expansion block)-size of a motion estimation block) / 2 means each.

In the deinterlacing apparatus of the present invention, when deinterlacing an intra or inter image, the intra or inter mode is selected as a motion search region size (unit) or a plurality of line units corresponding to the number of lines of the motion search region. Or it can be in units of one frame. Here, selecting the intra mode or the inter mode in units of a plurality of lines corresponding to the number of lines of the motion search region means that the mode is selected in units of 20 lines, for example, assuming that the motion search region is 20 × 20 size. In this case, the coefficient k may be calculated for all the motion vectors existing in the 20 lines, and the final coefficient k may be calculated by adding all calculated coefficients k and dividing by the number of motion vectors.

Accordingly, in frame selection block 114, in response to the switching signal provided from intra / inter decision block 112 on line L17, the output of the deinterlaced intra image on line L11 is selected as output or the deinterlaced inter on line L16. Select video as output. In this case, the output selection of the deinterlaced image may be performed in units of a motion search region (or an extended block for motion compensation) and a plurality of lines corresponding to the number of lines of the motion search region.

That is, as described above, in the image deinterlacing apparatus of the present invention, an intra image or an inter image is based on a motion vector generated when generating an inter frame through motion estimation / compensation, a size of a motion estimation block, and a size of a motion search region. Determine the deinterlace to the image.

As described above, according to the present invention, the above-described conventional method of calculating the difference between the forward and reverse interframe difference and the total difference value and the intra and inter frame difference and the difference total value for deinterlacing into an intra or inter image. In contrast, the median of the interframe is determined by taking the median value of the pixel value of the deinterlaced image using the line average value, the pixel value of the deinterlaced image using the median filter, and the pixel value of the deinterlaced image using the motion compensation as the final pixel value. Intra image or inter image by line interpolation based on motion information (motion vector, size of motion estimation block and size of motion search region) generated when generating deinterlaced image and generating inter frame through motion estimation / compensation De-interlacing to the image Lock manner, and to realize the adaptive video deinterlacing the even movement of the image without the need for complex computation, can also suppress the occurrence of block artifacts that may cause the image quality deterioration in the reproduction image.

Claims (18)

An apparatus for converting an interlaced video into a deinterlaced video in an imaging system supporting a deinterlaced video mode. Means for interleaving lines of the odd field and the even field to generate a deinterlaced intra image, First means for generating a deinterlaced first inter-image using line average values of the odd field and the even field; Second means for generating a deinterlaced second inter-image through median filtering using adjacent neighboring N pixel values; Third means for generating a prediction field through motion estimation / compensation between successive fields in time, and generating a deinterlaced motion compensation inter-image using the generated prediction field and the corresponding field; Means for performing median filtering using each output from the first to third means to determine a final inter image; Means for selecting an output of the intra image or the final inter image as a deinterlaced image based on motion information of each block generated in the motion estimation / compensation; Adaptive image deinterlacing apparatus using a median filter comprising a. The method of claim 1, The peripheral N pixels are adaptive image deinterlacing apparatus using a median filter, characterized in that the upper and lower pixels of the target pixel and the pixels in four diagonal directions. The method according to claim 1 or 2, And the second means is configured to generate the second inter-image by performing the median filtering on the lines of the odd field and the lines of the even field, respectively. The method of claim 1, The third means, Means for generating motion vectors through motion estimation in a motion search region of (N + M) × (N + M) in units of N × N motion estimation blocks using temporally continuous previous and current fields; Means for generating a forward prediction field by performing motion compensation using the motion vectors and the current field, and generating a forward interframe using the generated forward prediction field and the current field; Means for generating a backward prediction field by performing motion compensation using the motion vectors and the previous field, and generating a backward inter frame using the generated backward prediction field and the previous field; Means for generating the motion compensation inter-image using the generated forward and reverse inter frames Adaptive image deinterlacing apparatus using a median filter comprising a. The method of claim 4, wherein The median filter comprising: the motion compensation inter-image generating means generating the motion compensation inter-image by adding the generated forward inter frame and the reverse inter frame for each pixel and then taking an average value of each pixel. Adaptive video deinterlacing device. The method of claim 1, The motion information is adaptive image deinterlacing apparatus using a median filter, characterized in that the motion vector, the size of the motion estimation block, the size of the motion search region. The method according to claim 1 or 6, And the deinterlaced image selecting means selects the intra image or the final inter image in units of (N + M) × (N + M) motion search regions. The method according to claim 1 or 6, The deinterlaced image selecting means selects the intra image or the final inter image in units of a plurality of lines corresponding to the number of lines in the (N + M) × (N + M) motion search regions. Adaptive video deinterlacing device. A method of converting an interlaced video into a deinterlaced video in an imaging system supporting a deinterlaced video mode, A first process of generating a deinterlaced intra image by cross-inserting an odd field and an even field; Median filtering is performed on the first inter image generated by using the line average value, the second inter image generated by median filtering using adjacent multiple pixel values, and the third inter image generated by motion estimation / compensation between fields. A second process of determining a final inter image; A third process of selecting an output of the intra image or the final inter image as a deinterlaced image based on the motion information generated at the time of motion estimation / compensation Adaptive image deinterlacing method using a median filter comprising a. The method of claim 9, In the second process, the median filtering is performed on each of the lines of the odd field and the lines of the even field to generate the second inter-image. The method of claim 9, The second process, Twenty-first process of generating motion vectors through motion estimation in a motion search region of (N + M) × (N + M) in units of N × N motion estimation units using a temporally continuous previous field and current field and, A twenty-second step of generating a forward prediction field by performing motion compensation using the motion vectors and the current field, and generating a forward interframe using the generated forward prediction field and the current field; A twenty-third step of generating a backward prediction field by performing motion compensation using the motion vectors and the previous field, and generating a backward inter frame using the generated backward prediction field and the previous field; A fifth process of generating the third inter image by using the generated forward interframe and backward interframe Adaptive image deinterlacing method using a median filter comprising a. The method of claim 11, And the third inter image is an image obtained by adding the generated inter frame in the forward direction and the reverse inter frame for each pixel and then taking the average value of each pixel. The method of claim 9, The motion information includes a motion vector, a size of a motion estimation block, and size information of a motion search region. The method according to claim 9 or 13, In the third process, the intra image or the final inter image is selected in units of (N + M) × (N + M) motion search regions. The method according to claim 9 or 13, The third process may include selecting the intra image or the final inter image in units of a plurality of lines corresponding to the number of lines in the movement search region of (N + M) × (N + M). Adaptive Video Deinterlacing Method. The method according to claim 9 or 13, The third process, Calculating a coefficient k for output selection of the intra video or the last inter video based on the motion information; A thirty-second process of comparing the calculated coefficient k with a preset reference value; A thirty-third step of selecting the generated intra image or the final inter image as the deinterlaced image based on the comparison result; Including; The coefficient k is determined according to the following equation, the adaptive image deinterlace method using a median filter.

In the above equation, Vx is the motion coordinate value on the x-axis, Vy is the motion coordinate value on the y-axis, and SR is the value obtained by subtracting the size of the motion estimation block minus the size of the motion estimation block by 2, respectively. Means) delete The method of claim 16, The method may further include selecting the generated intra image as a deinterlace image when the coefficient k is greater than or equal to a predetermined reference value.

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